Home>Discussions>BATHROOMS>Marine Plywood or Concrete Backerboard Underlayment
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Moremoola
Marine Plywood or Concrete Backerboard Underlayment

We'd like to install 12" ceramic tile on our bathroom floor. Instead of using cement backerboard, can we install the tile onto 1/4" marine plywood which will be screwed in every 6". We're trying to avoid the need to adjust the door. The original flooring is wood. :confused:

jkirk
Re: Marine Plywood or Concrete Backerboard Underlayment

3/8 plywood is the standard for most renovators, its all i use in bathrooms and never had issues, you can go with exterior grade or fir.

as for the concrete backerboard, ive done two floors with it. both floors had issues with grout cracks and tiles popping

Moremoola
Re: Marine Plywood or Concrete Backerboard Underlayment

jkirk - :)Thanks for your response.:) Do you recommend maintaining a slight gap between sections and walls? Is so, how wide?

Discos
Re: Marine Plywood or Concrete Backerboard Underlayment

concrete backerboard has no problems . . . as my floor is made of it . . . just a bit cracks but no big issues . . . !!!Real time chicago Real Estate listings!

jkirk
Re: Marine Plywood or Concrete Backerboard Underlayment

what has cracks the finished floor? if so the backerboard hasnt done what its supposed to

as for gapping the panels, keep joints from one panel to the next tight, as for at the walls, 1/4" gaps at the wall and any pipes or fixtures wont hurt anything. you want some wiggle room when laying each panel so to not damage or pinch fixtures and pipes

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